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Evolutionary and comparative aspects of nociception.

M Kavaliers1

  • 1Division of Oral Biology, Faculty of Dentistry, University of Western Ontario, London, Canada.

Brain Research Bulletin
|December 1, 1988
PubMed
Summary
This summary is machine-generated.

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Nociception, the detection of harmful stimuli, is crucial for animal survival. This review explores its evolution, neuromodulation, and how factors like age and sex influence pain responses in rodents.

Area of Science:

  • Neuroscience
  • Animal Behavior
  • Evolutionary Biology

Background:

  • Nociception is the sensory nervous system's process of encoding noxious stimuli.
  • Nociceptive responses are vital for detecting and reacting to harmful environmental factors.
  • Measuring changes in nociception, such as antinociception and analgesia, helps assess animal well-being after experimental procedures.

Purpose of the Study:

  • To review the phylogenetic development of nociceptive responses and behaviors.
  • To examine evolutionary and comparative patterns in the neuromodulation of nociceptive behaviors.
  • To investigate the influence of biological variables on nociception in rodents.

Main Methods:

  • Phylogenetic analysis of nociceptive responses.
  • Comparative analysis of neuromodulatory mechanisms (opioid and non-opioid peptides).

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  • Review of studies examining biological variables affecting nociception.

    • Main Results:

    • Nociception has evolved across species, with complex neuromodulatory systems.
    • Opioid and non-opioid peptides play significant roles in regulating nociceptive behaviors.
    • Age, development, sex, and biological rhythms demonstrably impact nociception in rodents.

    Conclusions:

    • Understanding nociception's evolution and modulation provides insights into pain perception.
    • Biological variables significantly influence nociceptive thresholds and responses.
    • Rodent models are valuable for studying the complexities of nociception and pain.